Means for and method of connecting an exhalation valve, separator, or similar element with the face piece of a respirator, gas mask, or the like



Jan. 28, 1936.

N. SCHWARTZ MEANS FOR AND METHOD OF CONNECTING AN EXHALATION VALVE SEPARATOR, OR SIMILAR ELEMENT WITH THE FACE PIEC OF A RESFIHATOR, GAS MASK OR THE LIKE Filed July 26, 1935 IN VEN TOR. MIT/Mn \SCflWA/T Z BY aw 6d" ATTORNEYS.

Patented Jan. 28, 1936 LIEANS FOR AND IVIETHOD OF CONNECTING EXHALATION VALVE, SEPARATOR,

OR SIMILAR ELEMENT WITH THE FACE PIECE OF A RESPIBATOR, GAS MASK, OR

THE LIKE Nathan Schwartz, New York, N. Y.

Application July 26, 1935, Serial No. 33,198

4 Claims.

This invention has general reference to respirators, gas masks or the like and provides an improved means for and method of connecting an exhalation, flutter valve, canister, separator or any equivalent device or element with the face piece of the mask or respirator.

The invention broadly aims to provide an improved means for and method of attaching the valve, separator or equivalent element to the face 10 piece of the respirator or mask so as to insure a sealed, leak-proof juncture, while making for a more expeditious and less expensive assembling operation.

More specifically the means of connection resides in the arrangement of the open end of the valve or equivalent element within a slit formed in the face piece through which the open end of the valve extends and the emplacement of swatches of gasimpervious material arranged over opposite sides of the valve and over the exterior of the face piece adjacent the slit and the adhesive connection of the swatches together in overlapped relation, whereby they surround and intimately engage with the valve and with the face piece at the slit. V

The method more particularly resides in slitting the mask body, inserting the open end of the valve or equivalent element through the slit, adhesively applying swatches of gas impervious material over the slitted portion of the face piece and over opposite sides of the valve or equivalent element adjacent the slit and then adhesively joining the swatches together in overlapped relation.

With the above and other objects and advantages in view, the invention in one of its forms, is set forth in more detail in the following specification, the accompanying drawing and the appended claims, while it is to be understood that variations and modifications thereof which fall within the scope of the claims are also covered thereby.

In the drawing:

Fig. 1 is a perspective view of a respirator provided with an exhalation or flutter valve attached thereto in accordance with the invention.

Fig, 2 is an enlarged vertical fragmentary sechalation filter B. The exhalation or flutter valve C is also of any approved standard construction and is provided with an open end D which is maintained in expanded condition by a sleeve E. The improved means for connecting or attaching the valve C with the face piece so that the open end D is in communication with the interior thereof, comprises a slitted portion H] of the face piece through which the open end D extends.

In order to seal the valve in place and provide a leak-proof juncture, a swatch of rubber or other gas impervious material H is adhesively applied to the face piece of the respirator A over the slitted portion and over the outerside of the valve C. A similar swatch I2 of rubber or other gas impervious material is applied to the exterior of the face piece below the slitted portion l and doubled upon itself and adhesively applied to the inner side of the valve C, the laterally protruding portionsof the swatches H and [2 are also overlapped and adhesively joined together and if desired the swatch l2 may be slittedalong the lines l3 and the upturned space portions l4 adhesively secured to the swatch H. In order to provide a smoothfinish within the face piece, an inner swatch l5 may be applied adhesively where the open end D of the valve communicates with the interior of the respirator, the swatch l5 being provided with an opening l6.

The method of connecting the exhalation or flutter valve with the face piece consists in forming a slit therein, inserting the open end of the valve through the slit, adhesively applying swatches of material to the exterior of the face piece in the region of the slitted portion and over the opposite sides of the valve adjacent said slitted portion and then adhesively joining together the overlapped portions of the swatches to seal the juncture of the valve with the face piece.

While the invention has been illustrated in the drawings and particularly described in the de-- scription as applicable to an exhalation or flutter valve, it is to be understood that within its scope the invention is equally applicable to means for and method of connecting a canister, separator or equivalent device or element with the face piece of a gas mask, or respirator to establish a sealed leak proof juncture therewith.

What is claimed is:

1. In a respirator, gas mask or the like, a face piece having a slit, an element having an open end extending through said slit, swatches of gas impervious material adhesively applied to the exterior of the face piece adjacent said slit and ailheesively Joined to said element and to each 0 r.

2. In a respirator, gas mask or the like, a face piece having a slit, an element having an open end extending through said slit, a swatch of gas impervious material adhesively applied to the face piece above the slit and extending downwardly therebelow and adhesively joined to the outer side of the element and a second swatch of gas impervious material doubled upon itself and adhesively joined to the exterior of the mask body below the slit, to the inner side of the element and having portions overlapping and adhesively joined to the first mentioned swatch.

3. In a respirator, gas mask or the like, a face piece having a slit, an element having an open end extending through said'slit, a swatch of gas impervious material adhesively applied to the face piece above the slit and extending downwardly therebelow and adhesively joined to the outer side of the element and a second swatch of gas impervious material doubled upon itself and adhesively joined to the exterior of the mask body below the slit, to the inner side of the valve and having portions overlapping and adhesively joined rior of the face piece in the region of the slit, ad- I hesively joining said swatches to opposite sides of the element in surrounding relation to the slit and adhesively Joining said swatches together in overlapped relation.

, NATHAN SCHWARTZ. 

